(3fgGjI GdCQH aj afhf GdCOH (B/s - (3GdfhjQj, CMeO Hf YHO GdhgGH Hf eMeO,s 733-677 (3g`(B.s ((3GdbGgQI (B:s (3GdeDSSI GdeUQjI GdYGeI ddJCdja hGdJQLeI hGdfTQ hGdWHGYI,s, 1933)
Keywords: (3GdCOH GdYQHjs -- (3eLehYGJs -- (3OhGFQ eYGQas